can the Behringer have multiple settings?

Do you have some examples of specific rock tracks that sound bad? Can you describe the poor sounding problem (with Rock)?

I understand what you mean ...

Red Hot Chilli Peppers Californication album has evidence of severe soft limiting everywhere. Stadium Arcadium is bad too.

Lenny Kravitz certainly likes to use distortion for effect....his version of American Woman being an obvious example.

Nirvanna...needs no comment at all

In all these cases the distortion is rather deliberate. There is not much that can be done because the undistorted sound never left the mastering studio. The music was deliberately clipped and this changes the timbre of the sound. The process is called soft limiting and it creates the artificial impression of increased loudness to the ears....an edgy, rough and often irritating sound. The transients and dynamic content of the original music have been lost...

Since this is not a balance or an EQ issue it simply can't be repaired without the original studio recordings. I seriously doubt whether any EQ can do all that much to help.

You could try playing with Adobe Audition "Clip Restoration" tool but it is probably not worth all the trouble as you are unlikely to be able to faithfully re-create all that has been lost (once a transient is clipped it is gone and the software is left to guess what transients have been lost).